November 19, 1920] 



SCIENCE 



483 



methane." Melvin Guy Mellon, "Further study 

 of a lead standard cell. ' ' 



Pittsbuegh: Emil Harold Balz, "Derivatives of 

 2, 4, 6, trinitrobenzaldehyde. " 



Princeton : Arthur Ferguson Benton, ' ' Gas flow 

 meters and the end correction in the determina- 

 tion of gas viscosity hy the capillary tube 

 method." Homer Hiram Lowry, "Studies in 

 the absorption by charcoal." Merwyn Clarence 

 Teague, ' ' Efficiency, testing and improvement of 

 gas warfare box respirators. ' ' 



Virginia: Judaon Hall Robertson, "Hydrolysis 

 and heat of formation of urea sulphate, and the 

 relation of these factors to the decomposition of 

 urea into ammonia and carbon dioxide in aque- 

 ous solutions." 



Wisconsin: George J. Ritter, "Catalytic hydro- 

 genation of cotton seed oil." Van Lorens 

 Bohnson, "Contribution to the study of the 

 catalytic decomposition of hydrogen peroxide." 

 Barnett Sure, Title of thesis not given. Wallace 

 Headen Strowd, "Studies in the nitrogen meta- 

 bolism of the soy bean. ' ' Daniel Christopher 

 Leander Sherk, ' ' Thymol and carvacrol prob- 

 lems in connection with the Monardas. ' ' George 

 Robert Shaw, "Chemistry of platinum at high 

 temperatures and pressures." Clifford Shattuck 

 Leonard, Title of thesis not given. Clinton B. 

 Clevenger, I. ' ' The accurate determination of the 

 hydrogen-ion concentration of plant juices by 

 means of the hydrogen electrode. II. Factors 

 affecting the acidity of hydrogen-ion concentra- 

 tion of plant juices." 



Tale: Charles Barkebus, "Some constituents of 

 Viburnum Prunifolium or Black Haw." Stuart 

 Robert Brinkley, "Equilibrium in the system 

 ammonia-ammonium nitrate-ammonium thiocya- 

 nate. " Florian Anton Cajori, "Nutritive prop- 

 erties of nuts." John Joseph Donleavy, " Alky- 

 lation of aromatic amines by interaction with 

 aliphatic alcohols." Jacob Benjamin Fish- 

 man, "New derivatives of benzylalcohol possess- 

 ing possible therapeutic interests." Martha 

 Richardson Jones, "Studies on carbohydrate 

 metabolism in rabbits. ' ' Frederick William 

 Lane, "Study of certain alkyl derivatives of 

 resorcinol and their value as antiseptics." 

 Walter Gerald Karr, "Studies on nutrition." 

 Icie Gertrude Macy, "Comparative studies on 

 the physiological value and toxicity of cotton 

 seed and some of its products." Lyman Ed- 

 wards Porter, "Analytical chemistry of gal- 

 lium." George Walter Pucher, "Development 

 of the intermediate stages of a new method of 



synthesizing histamine." Arthur Henry Smith, 

 "Effect of solutions of certain salts and col- 

 loids on the permeability of the capillary walls. ' ' 

 Callie Hull, 

 Technical Assistant 

 Research Information Service, 

 National Research Council 

 (To be concluded) 



THE LOW TEMPERATURE LABORA- 

 TORY OF THE BUREAU OF MINES 

 On June lY, 1920, Professor J. C. McLennan, 

 of the University of Toronto, gave a lecture 

 before the Chemical Society in London, on 

 " Helium, Its Production and Uses." This lec- 

 ture has been printed in the July, 1920, num- 

 ber of the Journal of the Chemical Society. 

 At the close of his lecture Professor McLennan 

 gave special emphasis to the great need of a 

 properly equipped cryogenic laboratory some- 

 vrhere vpithin the British empire. To quote his 

 own words: 



The list of problems rendered capable of at- 

 tack Iby the use of liquid helium might be easily 

 extended, but those cited already will serve to show 

 that the field is large and that it is well worth 

 while for us to make a special effort to secure ade- 

 quate financial support for the equipment and 

 maintenance of a cryogenic laboratory within the 

 Empire. It is probably beyond the ordinary re- 

 sources of any university to equip and maintain 

 such a laboratory, but the project is one which 

 merits national and probably imperial support. 

 It should appeal to private beneficence as well for 

 it is a project deserving strong and sympathetic 

 help. 



It may be of interest to American scientists 

 to know that the need of such a laboratory in 

 this country was recognized by the Bureau of 

 Mines more than a year ago. The immediate 

 need was for the obtaining of certain scien- 

 tific data which is necessary for the improve- 

 ment and development of the commercial work 

 in connection with the government helium 

 plants, but there is a large field outside of this 

 immediate need which can be covered by such 

 a laboratory. 



Through the interest and broadmindedness 

 of Commander A. K. Atkins, of the Navy, and 

 Colonel C. DeF. Chandler and Lieutenant E. 



